Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
  • B29C63/18—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings
  • B29C63/20—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings using pressure difference, e.g. vacuum
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
  • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49863—Assembling or joining with prestressing of part
  • Y10T29/4987—Elastic joining of parts
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/53—Means to assemble or disassemble
  • Y10T29/53657—Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]

Definitions

• the present invention relates to a method of en ⁇ closing a body in a relatively thick enclosure of elastic material, especially rubber.
• the principal object of this invention is to eli ⁇ minate the above-mentioned difficulties and to provide bodies with such a relatively thick external coating in a simple manner and at low cost.
• a further object of the invention is to enclose, in. similar manner, liquid and gaseous bodies in a casing such that the casing exerts a considerable pressure on the body so that the body, if desired, can escape under pressure.
• the enclosing material in the form of a sleeve or the like which is open at one end and has a cavity of a cross-sectional area far smaller than that of the body, is inserted in a tight casing of rigid material; that the open end of the sleeve is widened and tightly connected to the casing wall defining the entrance opening; that the widened sleeve end is tightly sealed by means of a sealing member that can be clamped thereagainst; that pressure fluid is supplied to the cavity of the sleeve by means of a valve provided in said sealing member, while at the same time with ⁇ drawing the air from the -space between the casing and the sleeve via a valve mounted in the casing wall; that the supply of pressure fluid is continued until the outer side of the sleeve substantially engages the inner side of the casing, the valve in the casing wall being closed so that the sleeve is maintained in its expanded state when the valve in the sealing member
• the invention also comprises an apparatus for en- closing a body in a relatively thick enclosure of elastic material, especially rubber, said apparatus being charac ⁇ terised by a casing of rigid material, such as steel, which has been dimensioned on the basis of the dimensions of said body and said enclosure and which is open at one end but otherwise is closed, and in which the enclosing material can be inserted in the form of a sleeve or the like open at one end; a clamping device mounted at the open end of said casing and movable into engage ⁇ ment with the open end of said sleeve to clamp said end into tight engagement with the wall portion defining the opening of said casing; a sealing member which can be tightly clamped in the sleeve opening clamped against the said wall; a valve provided in said sealing member and connectible to a pressure fluid source for supply of pressure fluid to the cavity of said sleeve for widening said sleeve into engagement with the inner side of said casing; and a valve provided in the
• Fig. 1 is a lateral sectional view of an apparatus for coating rigid bodies with elastic material
• Fig. 2 shows the apparatus according to Fig. 1 from one end thereof.
• FIG. 1 shows a small part of a pipe 10 which is made of steel and is closed at the end not shown in the draw ⁇ ing.
• a collar 11 is welded which has a larger diameter than the casing 10.
• the casing 10 is provided in its wall with a valve 12 which is readily opened and closed.
• clamping means 13 in the form of piston and cylinder
• clamp ⁇ ing means 13 are in the form of piston and cylinder units; they may also consist of-mechanical means, such as gear 5 racks and pawls etc.
• the piston rods of the piston and cylinder units 13 are directed radially inwards and, for reasons that will be explained below, are provided with clamping jaws 15 within the collar 11.
• a sealing disc which may also be in the form of a tapering body has a
• arms 21 which, at their ends facing away from said plate 20, are provided with hooks 22.
• the arms 21 can be swung against the outer side of the collar 11 to enable the hooks to grasp lugs 23 mounted on the collar, as will appear from Fig. 1.
• the sealing disc 16 is provided with a valve 24.
• end of the sleeve is closed, for instance by bending the sleeve end and placing a clamping member over the bent portion.
• the sleeve 25 from which the sealing disc 16 and its associated parts have been removed, is inserted in the casing 10 until the open sleeve end is on a level with the open end of the collar 11.
• the end of the sleeve 25 is widened, for example by moving two opposed clamping jaws 15 towards one another by means of said piston and cylinder units until they can be inserted in the opening of the sleeve 25, whereupon the clamping jaws 15 by means of said piston and cylinder units are caused to move away from one another while expanding the sleeve.
• second clamping jaws can be inserted in the sleeve opening, and finally all piston and cylinder units are activated, such that they pull the sleeve portion adjacent the sleeve opening into tight engagement with the inner side of the collar 11, as is shown in Fig. 1.
• a tight space has now been established, and this space is made to communicate with the atmosphere by opening the valve ' 12.
• -the sealing disc 16 is placed in the widened sleeve end, and after the hooks have been placed around the lugs in the manner shown in Fig.
• the handwheel 19 is rotated, whereby the sealing disc 16 is tensioned inwards into engagement with the inner side of the widened end portion of the sleeve. In this manner, the interior of the sleeve is sealed against the atmosphere.
• a compressed air hose is then coupled to the valve 24, and by the supply of compressed air to the interior of the sleeve 25, the sleeve is expanded, simultaneously as the air is expelled from the said space between the sleeve and the casing via the valve 12.
• valve 12 When the outer side of the sleeve 25 engages the inner side of the casing 10, the valve 12 is closed, which means that the sleeve 25 cannot resume its original shape when, after removal of the compressed air hose and opening of the valve 24, the sealing disc 16 is detached and removed.
• the body to be coated is now readily insert- able in the widened sleeve 25, and when the valve 12
• the sleeve 25 strives to resume its original shape and thus is urged against the outer side of the body with considerable force.
• the body can be removed from the casing 10 and now carries a coating which tightly en ⁇ closes the body and, to all intents and purposes, cannot be removed without destroying either the body or the coating.
• the casing 10 is closed at its other end, and that the sleeve 25 is closed by being folded at its other end. It is, however, also possible to effect this sealing of the casing 10 and the sleeve 25 in the same manner as at the first-mentioned end, i.e. by means of clamping members and a sealing disc so that a body can be inserted from either end of the casing 10, thereby to make the work more efficient.
• the invention may also be used for enclosing liquid and gaseous bodies in a strong enclosure.
• the liquid or gaseous body is supplied via a valve or other supply means, and then the sleeve is allowed to contract in the manner described above.
• the open sleeve end must, in the latter case, be reliably sealed or connected to a suitable delivery valve so that the sleeve and the liquid or gaseous body enclosed therein can be used for discharging liquid or gas at high pressure.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Coating Apparatus (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Container Filling Or Packaging Operations (AREA)
• Clamps And Clips (AREA)
• Protection Of Plants (AREA)
• Fluid-Damping Devices (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20353093

Family Applications (1)

Country Status (10)

Families Citing this family (6)

Citations (4)

Family Cites Families (8)

• 1983
  • 1983-10-28 SE SE8305927A patent/SE440043B/sv not_active IP Right Cessation
• 1984
  • 1984-10-29 EP EP84904194A patent/EP0189418B1/en not_active Expired
  • 1984-10-29 AU AU36164/84A patent/AU564882B2/en not_active Ceased
  • 1984-10-29 DE DE8484904194T patent/DE3480781D1/de not_active Expired - Fee Related
  • 1984-10-29 WO PCT/SE1984/000361 patent/WO1985001912A1/en active IP Right Grant
  • 1984-10-29 JP JP59504125A patent/JPS61500259A/ja active Pending
  • 1984-10-29 US US06/744,814 patent/US4686755A/en not_active Expired - Fee Related
• 1985
  • 1985-06-18 DK DK275485A patent/DK275485A/da unknown
  • 1985-06-20 NO NO852481A patent/NO852481L/no unknown
• 1986
  • 1986-04-25 FI FI861765A patent/FI861765A0/fi not_active Application Discontinuation

Patent Citations (4)

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